Why MATLAB R2014a can not recognize my usb camera, while my camera works fine with amcap ?

My usb camera works fine with amcap ,but R2014a hardware browser can not see my camera.

The result of imaqhwinfo is below

>> imaqhwinfo

ans =

InstalledAdaptors: {}
        MATLABVersion: '8.3 (R2014a)'
          ToolboxName: 'Image Acquisition Toolbox'
       ToolboxVersion: '4.7 (R2014a)'

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Hi,

look at the line

InstalledAdaptors: {}

You don’t have any adaptor installed. Please install at least winvideo and you cam should be detected. In order to install the adaptors run

>>supportPackageInstaller

and follow the instructions (choose the OS Generic Video Interface a.k.a winvideo adaptor later on)

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Why MATLAB R2014a can not recognize my usb camera, while my camera works fine with amcap ?

Why MATLAB R2014a can not recognize my usb camera, while my camera works fine with amcap ?